Concrete tie rod



April 25, 1961 NOVELO 2,980,979

CONCRETE TIE ROD Filed Feb. 9, 1959 INVENTOR JOHN Nat 5.40

ATTORNEY 7 bit therebeyond.

CONCRETE TIE ROD John Novelo, 129-17 Rock-away BeachBlvrL,

Belle Harbor, N .Y.

This invention relates to the art of masonry and concrete construction and more particularly to a novel tie foruse in conjunction with forms for poured concrete structures.

The primary object of thepresent invention resides in the provision of a concrete form tie provided with novel means for breaking off the ends of the tie so as to facilitate rapid release of the forms.

The invention features the use of novel fittings of cylindrical shape which are arranged on a tie for facilitating rotation of the ends thereof so as to enable the tie to be more easily twisted and broken, thereby permitting the release of forms and the elimination of the projecting ends of the ties.

Another object of the present invention resides in the provision of a concrete form tie that employes a novel arrangement for enabling a tool to be inserted in the end of the tie for twisting the end of the tie, which means may also serve to aid in holding a form in position.

Another feature of the invention resides in the provision of novel fittings which may be used and re-used in conjunction with wall ties in an convenient manner.

.Still further'objects and features of the present invention reside in the provision of a concrete form tie that is simple in construction, efficient in use, capable of being manufactured from readily available materials, andwhich is inexpensive to manufacture, thereby permitting wide use and distribution.

These, together with the various ancillary objects and rates Patent features which will become apparent as the following description proceeds are attained by this concrete form tie, preferred embodiments being shown'in the accompanying drawing by way of example only wherein:

Fig. l is a perspective view of a concrete form tie constructed in accordance with the concepts of the present invention with parts thereof being broken away;

Fig. 2 is a longitudinal sectional view of the concrete form tie-comprising the present invention but showing" two types of fittings which may be used in conjunction with the present invention;

Fig. 3 is a vertical sectional view taken along thetransverse plane of line 3-3 in Fig. 1, illustrating particularly the construction of one of the fittings;

Fig. 4 is an elevational detail view illustrating the manner in which one of the fittings is positioned on the tie;

Fig. 5 is a transverse vertical sectional view as taken along the plane ofline 55 in Fig. 2.

With continuing reference to the accompanying drawing wherein like reference numerals designate similar parts throughout the various views, reference numeral 10 generally designates the concrete form tie comprising the present invention which is constructed on an elongated strap or bar 12 of metal of suitable length to extend the distances between opposed forms andto'extend'a little The bar 12 is provided with pairs'of slots 14 and 16 therein, each of which pair of slots substantially reducing the effective cross sectional area of the bar 12 at the slots. 1

Punched or otherwise formed in the bar 12 are slits 18 and 20. The slits terminate short of the ends 22 and 24 of the bar and permit the bar to have upwardly extending ears 26 and 28 pressed or stamped, while opposite and downwardly extending ears '30 and 32 are suitably formed in the bar 12 so as to provide means for receiving a tool such as a screw driver, or other similar elongated member for use as a lever in a manner to be hereinafter defined. Q Between the ears 26 and 30 and the slot 16 is a fitting 34, and another fitting 36 is disposed between the slots 14 and the ears 28 and 32. These'fittings form cylindrical bearings for the bar 12. e

As can be seen best in Figs. 2-4, one preferred form of the fitting 36 is in the guise of a cylinder of synthetic plastic material, such as any suitable synthetic resin, polyethylene, preferably of an exceedingly smooth nonporous surface and being slightly compressible or elastic. The cylinder is provided with a notch 3-8 of preferably wedge shape extending diametrically almost the whole thickness of the cylinder, but terminating as at 40, whereby the cylinder can clampingly engage the bar 12, as can be best seen in Fig. 3, the bar being inserted in the notch 38, whereby the draw portion 42 and 44 formed by notch 34 will clampingly grip thebar. It is to be recognized that this form of the invention enables the fitting 36 to be rapidly'and easily placed on the bar.

Another form of the invention is shown in Figs. 2 and 5 wherein substantially semi-cylindrical members 46 and 48 are bonded by suitable adhesive layers 50 and 52 to the bar 12.

The semi-cylindrical members 46 and 48 are preferably formed of cork which may have its outer surface treated crete has set, insertion of a tool in the respective openings between the cars 26, 30 and 28, 34, respectively, will enable the ends of the tie rod'to be twisted and the bar broken at the notches 16 and 14, respectively.

The fittings 34 and- 36 provide bearings for facilitating the twisting of the ends since they are circular in cross section in conjunction with the bar 12.

Further, upon removal of theends of the tie rod and the forms, the cylinder hearings will leave readily visible and highly desirable partial bores in the concrete wall, which may be easily grouted and filled with cementitious material, whereby no protruding tie wires or ties which can initiate a path for water through the foundations will be present.

Thus, it can be seen that there has been defined a concrete tie rod in the form of the elongated bar of substantially flat rectangular cross section with the bar having spaced pairsof opposed slots therein. The slots are spaced from the end of the bars and substantially reducing the crosssectional dimension of the bar at the slots. Fittings are secured on the barto form cylindrical bearings for facilitating twisting the ends of the bar to break the bar at the slots, while ears are provided at the Various changes and modifications may be made without departing from the spirit and scope of the present invention and it is intended that such obvious changes and modifications be embraced by the annexed claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent, is:

1. A concrete tie rod comprising an elongated bar of substantially flat rectangular cross section, said bar having spaced pairs of opposed slots therein spaced from the ends of said bar substantially reducing the cross sectional dimension of said bar at said slots, and fittings secured on said bar outwardly of said slots and forming cylindrical bearings for facilitating twisting of the ends of said bar to break said bar at said slots, each of said fittings being formed of a cylinder of a smooth, slightlycompressible synthetic plastic material, said cylinder having a notch of wedge shape formed therein, said cylinder receiving said bar in said notch and clainpingly engaged said bar.

2. A concrete tie rod comprising an elongated bar of substantially flat rectangular cross section, said bar having spaced pairs of opposed slots therein spaced from the ends of said bar substantially reducing the cross sectional dimension of said bar at said slots, and fittings secured on said bar outwardly of said slots and forming cylindrical bearings for facilitating twisting of the ends of said bar to break said bar at said slots, said bar having spaced slits therein adjacent the respective ends of said bar, said bar having ears integrally deformed at said slits from said bar for receiving a tool to apply leverage on the ends of said bar, each of said fittings being constructed of an exceedingly smooth, slightly compressible synthetic plastic material, each of said fittings being formed of a cylinder having a notch of wedge shape therein each of said cylinders receiving said bar in said notch and clampingly engaging said bar.

References Cited in the file of this patent UNITED STATES PATENTS 2,074,394 "Heifer May 23, 1937 2,218,099 Schenk Oct. 15, 1940 2,370,174 Kinninger Feb. 27, 1945 2,412,307 Tatsch Dec. 10, 1946 2,501,412 Schaefer Mar. 21, 1950 2,613,424 Kenney Oct. 14, 1952 2,728,127 Armstrong Dec. 27, 1955 2,838,822 Kenney et a1. June 17, 1958 

